Roller-hearth type heat treatment furnace carrier roller device

Abstract

The invention discloses a roller-hearth type heat treatment furnace carrier roller device. The device is installed on the inlet / outlet side of a roller-hearth type heat treatment furnace, and comprises a carrier roller 2, a laser thickness gauge 4, lifting air cylinders 8, an air supply pipeline and control valve set, a furnace roller water cooling system, a bearing lubricating system and an automatic control system. The carrier roller 2 is composed of a body, a hollow roller is adopted to allow clean recirculating water to pass through for cooling, the carrier roller 2 is prevented from deformation, cooling water 12 enters from one side and flows out from the other side, a manual ball valve 13 is installed on the water inlet side to adjust the water amount, bearings are installed at the two ends of the roller, lubricating points are arranged on the bearings, a dry oil lubrication form is adopted, and the carrier roller 2 is an idler roller; and the lifting air cylinders 8 are symmetrically mounted at the two sides, and provided with mechanical limiting and proximity switches. According to the device, the lifting air cylinders 8 are only used for treatment of thin plates with too large deflection and severe buckling deformation, the lifting function is automatically realized according to thickness measuring data in front of a furnace, and the lifting height is determined through the mechanical limiting and the proximity switches of the lifting air cylinders 8.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment, and relates to a roller hearth type heat treatment furnace supporting roller device. Background technique [0002] The heat treatment of wide and thick plates involves processes such as normalizing, quenching, tempering, and controlled cooling. Among them, the processes of normalizing, quenching, tempering, and controlled cooling require heating the steel to a certain temperature (generally ≧600°C), and then adopt water cooling or The air cooling method lowers the final cooling temperature of the process at a certain cooling rate to achieve the purpose of improving the internal structure and structure of the metal and improving performance. [0003] The heat treatment of wide and thick plates usually uses a roller hearth heat treatment furnace to complete the heating process, and a roller quenching machine to complete the quenching and controlled cooling processes. After shot bla...

AI Technical Summary

Problems solved by technology

Due to the large distance between the rollers in front of the furnace and the rollers in the furnace (the installation positions of the furnace wall, furnace rollers and furnace door are determined), the thin steel plate is severely buckled when the head is suspended due to its own weight, and cannot be smoothly put into the furnace. Pry up, and then start the roller table to move forward before entering the furnace, causing scratches on the lower surface of the steel plate and personal injury accidents; If the spacing is large, the steel plate is easy to be inserted under the roller table, causing production accidents

At present, there is no supporting roller device before and after the roller hearth heat treatment furnace

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